An unplanned roof fall occurred two (2) cross-cuts outby the abandoned 4 left panel off 3 west mains in the #3 return entry at survey station #3353. The roof fall is approx 20ft long x 20ft wide x 8ft-10ft thick. Ventilation has not been affected. roof fall area will be dangered off and blocked off to prevent access. There were no injuries associated with the roof fall.